Update CHANGELOG for 1.1alpha2
Update CHANGELOG for 1.1alpha2

seeminglee/pyglet64,adamlwgriffiths/Pyglet,adamlwgriffiths/Pyglet,adamlwgriffiths/Pyglet,niklaskorz/pyglet,niklaskorz/pyglet,niklaskorz/pyglet,seeminglee/pyglet64,adamlwgriffiths/Pyglet,niklaskorz/pyglet,seeminglee/pyglet64